20523405

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{3989}}^1$

素因数の和:4018

約数の個数: 32

約数和(自身を含む): 38304000

約数和(自身を除く): 17780595

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 343, 735, 1029, 1715, 3989, 5145, 11967, 19945, 27923, 59835, 83769, 139615, 195461, 418845, 586383, 977305, 1368227, 2931915, 4104681, 6841135, 20523405]

約数ペア:

[(1, 20523405), (3, 6841135), (5, 4104681), (7, 2931915), (15, 1368227), (21, 977305), (35, 586383), (49, 418845), (105, 195461), (147, 139615), (245, 83769), (343, 59835), (735, 27923), (1029, 19945), (1715, 11967), (3989, 5145)]